Finding the Fourth Proportional to 1,658.63, 2,488.61 and 684.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,658.63 : 2,488.61 = 684.51 : x
2. Step 2: Convert to fraction form
   1,658.63/2,488.61 = 684.51/x
3. Step 3: Cross multiply
   1,658.63x = 2,488.61 × 684.51
4. Step 4: Simplify right side
   1,658.63x = 1,703,462.57
5. Step 5: Solve for x
   x = 1,703,462.57/1,658.63
6. Step 6: Final answer
   x = 1,027.03